Indicating-valve.



c. e. HAYWARD.

INDICATING VALVE.

vAPNIC/mon FILED MAY1.1917.

Lgpur., Patented Feb. 18, 1919 Application fled ltay 7, L l?.

ec a citizen of 'the United ltatess resid- *Y 7 1 :ng V- 1v env Maven, in the county of New lleven ci? Ccuinocticutv have invented certain. nevv and useful Improve in windicating-Valves, of which the yins4 is c.v specification., reference being li# i *l crei-n to the accompanying drawings.

s inv tion has relation to automatically actuated valves arranged to operate when air pressure or tl e like contined in a falls below a given point.

The i ven-tion is applicable for use With int'ic i tires and will hereinafter be described in this connection, but it is to be undersccd however, that it may, Wholly or eerily,A be used in other connections, for instance, with the reservoir ci' si'fsteiia part ot the invention consists oi' a de- 'vice for giving an audible indication when the val-vo is opened upon the fell of pressure below the given point, but if desired, in some instances, e contacter may be actuated to open an electric circuit for the lpurpose of opereting e visuel signal at a. distant point, or to supply energy toran electric motor driving e.. pump, which would restore the re-1 quired nrcssnre to close the valve and breek tl elec c circuit.

n out one embodiment of the invention seme consists in part oi e. velvebodynl a vevs which is held in s, closed posi,

tion :be air pressure up to a given point tigres-.net c force einen tends to open the valve. the c'oeningoi the valve allowing .air

to escape through a by-passacge having therea device arranged to be vibrated or other- ;'vvise moved by the escaping zur, and by ineens provided, said oy-passage is closed.

when is to los restored. And further? moans ere worev/ided whereby the valve may r adily used es an ordinary tire valve, 'with n prese-'ure indicating gage o All the above features, together with deteils construction 'forming part ci' my intitl volition, `vill be hereinattter described with reference to the accompanying drawings, in vvnich.;wm l

Fignre 1 is a longitudinal, sectional view le complete valve; and

sectional of the vslve proper and come ci the accnt parte.

Specification of Letters Patent.

an air brake' the ordinary tire valve stein 17 shown in dottedtlines.

llmatenter Feb. l, 1919.

Referring to the drawings-1 is the valvebody, having a main air passage through s. longitudinal bore 2 and a base 3 internally threaded at to lit7 for example, 0n the valve stein 5 of a i ye, such a stexn'being shown in dotted lines. The valve-body l is externally threaded at 6 to receive an outercap 7 and at the reduced portion 8 of the valve body external threads are provided to receive the inner cap 9.

The valve seat l0 is a member separable from the valve body and is screwed tightly in place against the shoulder 11 on internal three-ds 12, the gasket 13 being interposed between the shoulder ll and a shoulder portion of the seating to insures tight joint. The bore of this 'seating is conical and the lower end thereof is closed bv means of a head 14 having a depending sha'nk l5, which is made hollow to receive the lower end of the valve stem and seid shank is closed at the bot-toni, an orifice 16 being provided therein for the passage of air. The dependingI shank abuts against and opens The valve stern or carrier 18, forming part of the present invention, consists of a member carrying a valve disk 19 composedV of a suitable material, preferably rubberj which is capable of expanding and contracting, its eX- pansion laterallybeing effected by thecone :20 on which they` disk 19 is seated. This dislr lies between tivo heads or stops 21 and 22, which heads limit an independent Inovemcnt allowed between the valve vcarrier and said disk. When the valve ris open, as shown in Fig. 2, the valve disk 19 and stem 18 are out ot contact With the adjacent parts, except that the upper end of the stel-n is' in contactlvvith an abutment 23 4'carried by the bunter heed 24. v

ln the open position of the valve, the latterand its carrier, are practically 'un-, Supported; vconsequently *what may be termed a substantially oating movement is allowed to those parts, thereby insuring that the passage around the valve proper is com'- pletcly open when the parte actuating the valve have been operated to open same. Furthermore, on account of the surface cngagedbeing greater, the disk is incre in clined to adhere to its seat than to the cone vsl ietf

portion of the cone and then said disk can contract, the disk being, however, liept within a limited range of movement between the heads 2l and 22.

The valve is kept in its closed position by pressure of the air below the valve and the compression spring acting on the bunter head 24 transmitting pressure above the valve has a tendency to open the valve, but the capacity of the spring 25 is such that it will not overcome the force of the air pressure until such pressure. falls below a pre determined point. Villen the pressure does fall below such point, 'the valve stem is pushed down by the bunter head and the valve is opened, the air escaping through a by-passage 2T and not through the main passage Which is closed by the cap 9. The escaping air vibrates the diaphragm 2S causing an audible sound, indicating that pressure in the tire has fallen below said predetermined point.

To restore the air pressure, the outer cap 7 must first be removed bodily, and such action closing the by-passage 2T by means of the slide valve 29, which is actuated by spring 30 when pin 3l is released upon the removal of the cap T only part way. The inner cap 9 is then removed from the valve body allowing the compression spring 3Q to extend toward the point 33 forcing before it the shouldered bushing Sel, which is secured to the bunter pin 35. This bunter pin is actuated by releasing the spring 3, thus allowing the bunter pin head 37 to engage the shoulder 36 of bunter 24C and pull the latter away from the valve stem against the ,weaker spring 25, allowing the valve to close and the stem of its carrier to be free from contactavith the bunter thus preventing the spring 25 from performing its function as heretofore described.

When the valve and other parts are in the position last described the valve complete can be used similar to the Ausual valve stem of a tire, meaning that an ordinary pump can be attached to the valve body and air forced into the tire, past the valve proper which will open and close, .according to which side the pressure is greater, and when the valve is so arranged a'nY ordinary pressure gage can be sec/uredo'n theV threaded portion 8. i

It is obvious that the benefits of the present invention may be obtained without employing all the parts thereof, for example the compression spring 32 together with the inner cap 9 and the parts relating particularly thereto `may be omitted il' the interchangeability to an ordinary valve is not desired. Such .and other part use of the invent-ion and modificationsthereof are included Within the scope of the invention as defined in the appended claims.

Having described my invention, .what l nase-,azie

2. in a device of the character described;v

a body portion having' a main passage a by-passage; a valve for each of said pas sages; a cap or eover controlling the operation of a device which closes the valve for the by-passage; and a movable element op erated by air passing through the by-parsage.

3. ln a device of the character described;

a body portion having a main passage and a a buv-passage therein; a cap or cover for said mainl passage; a valve in said main passage automatically opened when pressure falls below a given point; a device in said by-passage vibrated by escaping air; and

a valve for said bvpassage which is opened and closed according to the position ol' said cap or cover.

-l. In a device of the character described; a body portion having a main passage and a by-passage; a removable cap; a conical valve in the main passage; a valve oarricr supporting an-eXpansive valve dish; means operating automatically' at a predetermined time for positively moving said carrier to allow contraction of said valve disk to open the main passage allowing air to escape 4through the lay-passage; and a valve for the latter passage closing auto matically when said cap is removed.

ln a device of the character described; a bodyportion having a main passageand a by-passage; a ,valve for each passage; means for positively opening 'the main pas sage valve at a predetermined time; counteracting means when released rendering the said valve operatinu means ineffective; an outer and an inner cap on the body portion, the outer cap controlling the valve *for the by-passage and the inner cap controlling said counter-acting means.

6. In a device the character described; a valve operating and -controlling mechanism, comprising a bunter head having independent movement relatively toa bunter pin under the action. of an actuating spring;

and a controlling spring of a greater caparity than the actuating spring, which controlling spring, when released, prevents said independent movement or' the bunter head and renders the actuating spring inoperzv tive.

7, ln a device of the character described; a body portion having a main passage therein and a lay-passage communicating with lit? 'alle menaces said main passage; a valve for said by-passage; a detachable cover on said body p01'- tion; and means, released by the movement of said cover,'for automatically closing said valve.

8. In a device of the character described; a body portion having a longitudinal passage therein and a by-passage communicating therewith; a conical valve seat in said longitudinal passage; a loosely mounted valve carrier within said seat having a substantially floating movement when the valve is opened; automatic actuating means comprising a spring controlled member bearing on said carrler for opening said valve; means, including a cap and a dust cover,

which must be manipulated to manually open said valve; a valve in said lay-passage;

and means controlled by said dust cover for closing the latter valve.

9. Ina device of the character described; a body portion having a main passage and a by-passage with -a valve and seat therefor in each passage; an inner and an outer cover for said main passage; means for automatically opening the main passage valve at a predetermined time; counter-acting means controlled by said inner cover when released'.

rendering said valve operating means inefv assa e' com ression means tendin to o en said main passage inlet valve; counter-acting means when released rendering said compression means inel'ective; an inner cap covering said counteracting means; a cover inclosing said cap; and means for closing said outlet valve released by removal of said cover.

l1. In a device of the character described; a body portion having a longitudinal passage and a by-passage therein; a valve element and means for actuating the same within said longitudinal passage; caps closing said main passage; and a valve in said by-passage normally held open by one of said caps. Y

In testimony whereof I have hereunto affixed my signature.

CLARENCE B. HAYWARD. 

